“Small buds, of 2 to 3 cm about 1″” in diameter, grow along the thick central stem. Remove the lower leaves when they turn yellow. Harvest sprouts from the bottom to the top and dead-head in mid-September to promote production.
To grow best, they need heavy soil to prevent them from falling on the side. Never allow soil to dry out by using mulch to keep the soil cool. It is good to feed them with a high nitrogen liquid fertilizer every two to three weeks, just in case they need it. Ideally, you want Brussels sprouts to grow into stocky, knee high plants before they elongate and start popping out sprouts. Once production begins, each plant produces about five sprouts weekly. By the time the harvest finishes each plant should have produced 30 or more sprouts on a 4-foot long stalk.
In addition, removing the shoots that come out of the plants a month before harvest will give greater production, because the plant will put the energy it put into the growth of its leaves in the development of Brussels sprouts.
You can wait until late in the fall to harvest it just before the frosts.
1 m & more